Threw a Leg out of Bed

[Cosmic3MPS]

Yep. Blew my motor travelling from Bris back to Moranbah. After cruising for around 3 hours on the highway slowed down to go through a small town. Accelerating back up in 5th leaving town, boom! Not even aggressive on the throttle. The carnage was massive. Fist sized hole through the block, litres of oil through the exhaust, melted piston and sundry other shrapnel went through the turbo. All fixed now. Sourced a motor the next day and am up and running again. But I must say my ringpiece now puckers like a blind knife-throwers assitant's everytime I accelerate in 5th gear. Someone figure this shit out please. Enough is enough.

Details:

EVENT:
Tank full of BP Ultimate (98 octane)
50/50 water/ meth mix
Cruising for around 3 hours on the highway
Slowed down to go through a small town
Gentle acceleration back up to speed in 5th leaving town (95 to 100 kmh)
No prior symptoms or problems, car running great
No 4 piston (and to lesser extent No 3) massive failure (broken rod, melted piston)
Fist sized hole through the block, oil through the exhaust and intercooler
Shrapnel through the turbo

FIX:
Replacement long block and turbo
Time for repair 1 week
Cost total $7k

ENGINE MODS:
CPE TBE (high-flow cat)
Forge BPV
Mazdaspeed CAI
Snow Stage 1 W/M Injection (injection starts at 4 psi boost and 2500 rpm)
Xede Interceptor (18.5 psi, timing advance 5 degrees)
PG V2 Turbo Mani
COBB FMIC
Dynoed at 233 kw atw

[phillyb]

wow. turnaround was mad quick for you

[Doc]

Shit mate. Sorry to hear. Quick turn around, back on the road though

[MZRDISI4]

Running XEDE too. - Should be noted.

[RayRayBauder]

at least your already back up and running. sucks regardless though

[SneakyP86]

Sorry to hear about you blowing man........but its nice that you were able to get back up and running so soon after.

[Cosmic3MPS]

Originally Posted by SneakyP86 Sorry to hear about you blowing man........but its nice that you were able to get back up and running so soon after.

Thanks for the kind words all. Good Aussie mechanics. They actually said it was a good car to work on. They had to get the intercooler flushed out as well as oil got in there (as well as everwhere else).

[Fobio]

wow...Aussie time is definitely not island time...the gf fucked up a rental's door and that took 3 days to fix...we all need your mechanic's number!

good luck man....hope you find the culprit.

[bova]

if you had shrapnel in your turbo and intercooler it sounds like your turbo failed causing the end failure.

[Cosmic3MPS]

Originally Posted by bova80 if you had shrapnel in your turbo and intercooler it sounds like your turbo failed causing the end failure.

There was oil in the intercooler and damage to the turbine wheel from small bits of some sort.

[bova]

sounds like the turbo failed or a chunk of the piston/rod made its way into the exhaust stream and busted up the turbo that way.

[Deadman]

still had that balance shaft in there huh? 0_o haha!


sorry to hear

[gsrtype1]

Where you monitering knock with a dashawk? Alot of people here like laloosh darksun p3 performance say advanceing timeing is bad move and and can make you blow and you where at 5 dgrees advance, where you monitering knock with a dashhawk?

[Cosmic3MPS]

Originally Posted by gsrtype1 Where you monitering knock with a dashawk? Alot of people here like laloosh darksun p3 performance say advanceing timeing is bad move and and can make you blow and you where at 5 dgrees advance, where you monitering knock with a dashhawk?

Unfortunately no monitoring at the time. No knock when tuned but no idea of what the situation was at the time of the event

[gsrtype1]

Originally Posted by Cosmic3MPS Unfortunately no monitoring at the time. No knock when tuned but no idea of what the situation was at the time of the event

Dude that was probably it. I have tested it 5 degrees is to much you can get away with it for a little while but you proabaly devopled knock at close to 19psi that is to much. your engine was probably real hot form the trip and you where advancing 5 degrees and boom...

[gsrtype1]

I can garentee you from my experiance that even though you didn't get knock when you tuned 19psi with 5 dgrees advance is REALLY pushing the limits... I did this and had to pull back shortly after cuase started getting knock. Since you didn't have a dash hawk you had no way of knowing...

[Cosmic3MPS]

Originally Posted by gsrtype1 I can garentee you from my experiance that even though you didn't get knock when you tuned 19psi with 5 dgrees advance is REALLY pushing the limits... I did this and had to pull back shortly after cuase started getting knock. Since you didn't have a dash hawk you had no way of knowing...

Appreciate the input on this but I am keeping an open mind for now. I am looking forward to the results of the work Jon is doing and am more than a little interested in the hydrolock theory. My experience is so similar to many others where an engine has popped on a long trip and these others were not to my knowledge advanced by 5 like I was. So let's wait and see how this unfolds

[gsrtype1]

Originally Posted by Cosmic3MPS Appreciate the input on this but I am keeping an open mind for now. I am looking forward to the results of the work Jon is doing and am more than a little interested in the hydrolock theory. My experience is so similar to many others where an engine has popped on a long trip and these others were not to my knowledge advanced by 5 like I was. So let's wait and see how this unfolds

Yeah I'm not saying it was that for sure. I was just going off what I experianced. The reason the most I advance is 2-3 dgrees at 17psi for daily driving and when I up the boost I don't advance is cuase I devoped kr. This devolped over time as I noted with the dash hawk (plus I do data logs just for fun all the time) Thats how I discovered what was happening you should get a dashhawk if your going to continue to advance your timeing bro! I could see if you where at 5 degrees for a period of time it getting outa hand...

[superskaterxes]

how do we know how much timing were running total? do we just compare our map to the stocker?

[mexicant]

Maybe you sucked a roo into your turbo

[802MS3]

I hate to thank you for a post on the subject, but your info is very detailed. info like this is needed on all the blown motors out there.

[Cosmic3MPS]

Originally Posted by 08ms3bm Maybe you sucked a roo into your turbo

No chance of that, the croc in the intake scares em away

[MattMPS3]

Hey Cosmic,
Sorry to hear of your misfortune, although you were at the top of my short list for potential engine destruction, you have to admit you were running on the razors edge with your tune, anyway glad you were able to get it sorted out so quickly.

Dammit, there goes the perfect record for the Xede too, sounds like you got a bad case of knock (in my opinion), I know there are dozens of theories flying around the forums at the moment though, but one things for sure BUY A DASHHAWK just in case it was knock related you may be half a chance of saving the motor if it ever happens again.

[Doc]

Have copied this over to the mazdaspeed-3-engine-transmission-driveline section.

FYI this came over from the Australian section.

Thought a few more may see it here...

Doc

[jeff4880]

Timing advance on any forced induction engine is very risky!

[zoom1&zoom2]

[QUOTE=(18.5 psi, timing advance 5 degrees)[/QUOTE]


IMHO it seems like the majority of these cars that blow the motors have 2 things going on... more boost than stock and part throttle knock issues. Knock is a engine killer in any car, especially a turbo car. And I think the engine cant handle the extra boost. But thats just my opinion though.

Glad to see you had a quick turn around.

[MarkyMark]

5th gear accelerating? too much load makes boom. glad to hear your driving again.

[Meder]

Its not like he floored it in 5th. I think the 5 timing has a lot to do with this. It has been found by many that not only does timing seem to do very little, it also adds a lot of stress to this car.

[demonspeed]

Sorry for the loss man, 7k is not an easy bill to swallow heh. Also, the only WOT Kr that I get is in 5th gear.

P.S. I hate you Mark, I stared at your avatar for probably 10 minutes... was almost late for work.

[myspeedy07]

oil hydrolock theory here?

[zoom1&zoom2]

Originally Posted by Meder Its not like he floored it in 5th. I think the 5 timing has a lot to do with this. It has been found by many that not only does timing seem to do very little, it also adds a lot of stress to this car.

I floor my MS6 in 5th all the time.... shouldnt be a big deal IMO

[Speed3FTW]

Originally Posted by zoom1&zoom2 I floor my MS6 in 5th all the time.... shouldnt be a big deal IMO

I do the same, 5th on the freeway is a fun gear...it seems to pull harder than every other gear, at least for me. I just make sure to ease into WOT and make sure that I'm at > 4k RPM before starting to accelerate. Once I get my DH, I'll find out how bad this is for my car.

[DR_]

Even with no mods and 93 octane my DH shows I get knock if I get into the throttle at lower RPM's.

[zoom1&zoom2]

Originally Posted by DR_ Even with no mods and 93 octane my DH shows I get knock if I get into the throttle at lower RPM's.

How do I view knock with my dashhawk?

[mouse0330]

sorry for the lost mate, how many miles on your car when it blown.
I don't think any time of shifting or procedure that cause the blown engine. We need to stop blaming how a person shift or which gear they are in when engine is blown.

this is the second engine that I know of that runs meth and blown.
Was your car tune for your mod?

[slo4now]

You posted 98 octane, is this true,and is 5deg of timing total advance or what cause
i run a shit load more timing than that.




Dont want my shit to blow up yet.

[DR_]

Originally Posted by zoom1&zoom2 How do I view knock with my dashhawk?

You can view Knk Ret if you like but since it hardly ever does anything I made an alert on Knk Ret for anything >= 1.

[Meder]

Originally Posted by slo4now You posted 98 octane, is this true,and is 5deg of timing total advance or what cause i run a shit load more timing than that. Dont want my shit to blow up yet.

I am pretty sure he advanced timing 5 degrees which seems to be a big dont on this car. 98 octane over there is like 93 or something...

[slo4now]

Ok so he added 5deg on top of stock timing, that would be a no no without
higher octane in my book.

[slo4now]

Let us know if there were any bent rods in there, i wonder if it was
a hydrolock issue,oil in the chamber, that kind of stuff.